The TamTam submarine cable system consists of a 411-kilometer international segment connecting Port Vila (Vanuatu) and Lifou Island (New Caledonia), and domestic extensions to other islands in Vanuatu, including Tanna, Norsup and Luganville. 

The TamTam project aims to establish the world's first SMART cable for Science Monitoring And Reliable Telecommunications,  to be owned, managed and operated under a public private partnership (PPP) arrangement, with stakeholders including Interchange Limited, Prima Limited, Alcatel Submarine Networks (ASN), OMS Group, Pacific Peering, OPT, and governments of Vanuatu, New Caledonia and France.

The TamTam cable is the property of Interchange Limited, a local operator in Vanuatu. Prima Limited, a telecommunications and data infrastructure firm registered and based in Port Vila (Vanuatu), will operate and maintain the cable in Vanuatu. Prima is responsible for the maintenance and operation of Interchange's ICN1 subsea cable system connecting Vanuatu to Suva,Fiji, the sole international subsea cable linking Vanuatu prior to the coming of the TamTam project.

New Caledonia’s telecom company OPT (Office des Postes et Telecommunications) is a partner to support the project in New Caledonia.

The TamTam cable system is supplied by Alcatel Submarine Networks (ASN), collaborating with OMS Group for marine installation.

Pacific Peering, established in 2020, incorporated and headquartered in Nouméa, New Caledonia, is a pioneer company in providing international connectivity and digital development services in the Pacific region. Pacific Peering is responsible for integrating the "SMART" (Science Monitoring And Reliable Telecommunications) technology into the TamTam cable system. This involves installing sensors (temperature, pressure, seismic) that will provide real-time data for environmental monitoring and early warning systems for natural disasters like tsunamis and earthquakes.

In early 2024, Prima and Alcatel Submarine Networks (ASN) signed a contract for the establishment of the first SMART subsea cable system connecting New Caledonia (landing on Lifou Island, Loyalty Islands group) and Vanuatu (Port Vila) 

In December 2025, ASN and OMS announced that the Tamtam Cable contract with Prima Ltd (Vanuatu) has officially entered into force as of 16 December 2025. The system’s Ready for Service (RFS) date is scheduled for end of 2027. And the system connectivity is extended from Port Vila to Vanuatu’s other islands, including Tanna, Norsup and Luganville. 

The SMART TamTam cable project is funded by the European Investment Bank (EIB), Asian Development Bank (ADB) and the French Government, including equity share contributions from Prima Ltd, the Vanuatu National Provident Fund (VNPF) and the Vanuatu Post. France has committed approximately €18 million (VT2.5 billion) to support the SMART TamTam project.

The SMART TamTam cable system is expected to be ready for service by the end of 2027.